Key Power New Laptop Battery for Apple A1322 A1278 (MacBook Pro 13 inch - Mid 2009, Mid 2010, Early 2011, Late 2011, Mid 2012), fits MB990LL/A - 18 Months Warranty [Li-Polymer 6-cell 6000mAh/65Wh] Battery type: Li-Polymer; Capacity: 6000mAh/ 65Wh; Cells: 6-cell; Voltage: 10.95V. Worry-free, products are passed CE-/FCC-/RoHS-Certified for safety. 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. 18 month hassle free warranty. 8 hour and 5 weekdays with professional and efficient support. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability.